Polyurethane sealant – the most widely used sealing material

Polyurethane is a new type of synthetic polymer material, it is widely used in the construction industry, the common polyurethane materials are polyurethane plate, polyurethane plastic, polyurethane glue and so on.

Among them, polyurethane sealant used as bonding or sealing is one of the commonly used rubber substances for construction workers, in the interior decoration, door and window installation master often use it to glue doors and Windows or fill gaps, but for many people, small items like this are easy to be ignored, let alone understand.

Although the polyurethane sealant looks insignificant, if the quality and performance of the polyurethane sealant used by the door and window installer are not up to standard, it will eventually affect the fastness and tightness of the doors and Windows, so it will only be penny-wise and pound-foolish.

The following will introduce you to polyurethane sealant.

First, about polyurethane sealant listen to the name we can know, polyurethane sealant is mainly used to fill the gap, we always encounter gaps in the construction or product production process, generally we will use some under certain conditions can be cured to fill the material, and polyurethane sealant is one of the substances used to fill the gap.

From the perspective of composition, polyurethane sealant is mainly composed of polyurethane rubber and polyurethane prepolymer.

At present, polyurethane sealant is used as a sealing material in construction engineering, door and window installation, automobile manufacturing and other fields.

There are many types of polyurethane sealant, we often use polyurethane sealant including single-component and two-component two categories, the biggest difference between the two types of polyurethane sealant is the way of curing, single-component polyurethane sealant curing is wet gas curing, two-group polyurethane sealant curing is reaction curing.

The advantages and disadvantages of the two types of polyurethane sealant are convenient to use, but its curing is slow, and the two-group polyurethane sealant curing speed is fast, good performance, but in use need to be deployed first, the process is complex, inconvenient construction.

Two, the advantages and disadvantages of polyurethane sealant Polyurethane sealant has almost completely replaced the traditional similar sealing materials, in the sealing materials market occupies an absolute dominant position, mainly because it has excellent characteristics.

The main long-term heat resistance of polyurethane sealant, at the same time, some products are affected by the external environment, the advantages are reflected in the performance can be adjusted at will, a wide range of application, good wear resistance, good elasticity, good adhesion, etc., in addition, it is greatly extended compared with similar products.

However, polyurethane sealant also has some shortcomings of its own, such as poor water resistance, especially the poor performance of alkali water, and can not be bad, as consumers, we must look at the quality of the manufacturer when purchasing is not easy to save.

The above is the knowledge related to polyurethane sealant introduced to you .I hope it will be helpful to you.